December weather forecast
San Cristóbal, Argentina

December, the first month of the summer in San Cristóbal, is also a hot month, with an average temperature ranging between max 33.1°C (91.6°F) and min 20°C (68°F).

Temperature

The average high-temperature during December is a still hot 33.1°C (91.6°F), almost matching the conditions of the preceding month. December nights present a stark temperature decrease to a pleasant 20°C (68°F).

Heat index

December's average heat index is computed to be a very hot 37°C (98.6°F). Take additional safety steps, risk of heat exhaustion and heat cramps is notable. Prolonged activity may cause heatstroke.
Given the heat index, its values are aligned with shaded sites and gentle winds. With exposure to direct sunshine, the heat index could climb by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is achieved by amalgamating air temperature with the relative humidity readings. The influence of weather is personal, differing among a variety of individuals based on differences in body mass, stature, and the level of physical activity. Keep it in mind, direct sunlight can augment the heat you experience, possibly pushing the heat index up by 15 Fahrenheit (8 Celsius) degrees. Heat index values are quite important for children. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
The human body normally cools itself by perspiration, as evaporated sweat carries heat away from the body. When relative humidity increases, the body's capacity to evaporate heat decreases, leading to a heightened sense of warmth. Rising body temperatures due to excess heat retention could signify impending heat disorders.

Humidity

In December, the average relative humidity in San Cristóbal is 53%.

Rainfall

In San Cristóbal, in December, it is raining for 10.8 days, with typically 60mm (2.36") of accumulated precipitation. Throughout the year, in San Cristóbal, Argentina, there are 102.1 rainfall days, and 528mm (20.79") of precipitation is accumulated.

Daylight

December has the longest days of the year in San Cristóbal, with an average of 14h and 6min of daylight.
On the first day of the month, sunrise is at 05:55 and sunset at 19:53. On the last day of December, sunrise is at 06:06 and sunset at 20:10 -03.

Sunshine

The month with the most sunshine in San Cristóbal is December, with an average of 9.4h of sunshine.

UV index

January, February and December, with an average maximum UV index of 7, are months with the highest UV index. A UV Index reading of 6 to 7 represents a high health risk from exposure to the Sun's UV rays for average individuals.
Note: An average maximum UV index of 7 in December leads to these recommendations:
Uphold preventive measures and conform to sun safety guidelines. Defending against skin and eye harm is crucial. Stay out of direct sunlight and seek shade between 10 a.m. and 4 p.m., when UV radiation is strongest, but remember that shade devices may not offer full sun protection. Stay sun-safe with clothing that is both closely woven and worn loosely.